It is known that at noon, the sun is hidden by clouds on an average of two days out of every three days. Find the probability that at noon on at least four out of five days the sun will be shining.

50% studentsanswered this correctly

Important Questions on X+2 Maths

MEDIUM

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 11

If on average

1

vessel in every

10

is wrecked, find the chance that out of

5

vessels expected

4

at least will arrive safely.

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 12

Two fair dice are thrown. What is the probability that the number of dots on the first dice exceeds

3

and that on the second exceeds

4

?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 13

What is the probability that a card drawn at random from a pack of

52

cards is either a king or a spade?

MEDIUM

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 14

Nazneen was dialling a telephone number of six digits. She forgot the last three digits of the six-digit telephone number but remembered that the number formed by the last three digits in the same order was a perfect square. What is the probability that she dialled the right number?

MEDIUM

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 15

What is the probability that there are