Question

Let E, F, G be three events.Find expressions for the events that at most three of them occur.

Answer 1

Answer:

Sue left with: (13 - x) sweets

Tony left with: \rm \dfrac{(18 + x)}{2}

2

(18+x)

sweets

Explanation:

Given,

Both Sue and Tony has 18 sweets.

• First case:-

Sue gives Tony ‘x’ sweets

∴ Number of sweets left with Sue: (18 - x)

And also,

∴ Number of sweets Tony have: (18 + x)

• Second case:-

Sue eats 5 of her sweets

∴ Remains: (18 - x) - 5 = (13 - x)

And also,

Tony eats ½ of his sweets

∴ Remains:

= ½ of (18 + x)

\rm = \dfrac{(18 + x)}{2}=

2

(18+x)