Magic Bag - Mr Barton Mathsmrbartonmaths.com/resourcesnew/something in common/Magic...Magic Bag A magic bag contains some black and white balls, all of the same size, weight and shape.

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 45

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 66

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 91

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 120

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 153

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 190

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 231

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 276

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 325

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 378

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 435

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 496

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 561

= ?

SIC_10

Magic B

agA magic b

ag contains some black

and white

balls, all of th

e sam

e

size, w

eigh

t and sh

ape.

I put m

y hand

s in the bag and

sim

ultaneously and

random

ly pull out tw

o balls. T

hey are

both

the

same colour and

the magic b

ag tells m

e th

at the ch

ance of th

is occurring w

as exactly 0

.5.

The bag contains a give

n number

of black b

alls.

Can you w

ork out how many w

hite

one

s there are

?

What valid

combinations of b

lack and

white

balls are

possible?

= 630

= ?

SIC_10