CTET CTET Math 4

Question 1

The sum of interior angles of a hexagon is:

Accepted Answer

720°

Answer

Sum = (n − 2) × 180° = (6 − 2) × 180° = 720°.

Question 2

Which of the following fractions is between 3/5 and 4/5?

Accepted Answer

7/10

Answer

3/5 = 0.6 and 4/5 = 0.8; 7/10 = 0.7 lies between them.

Question 3

A number when divided by 56 gives remainder 29. What remainder does the same number give when divided by 8?

Accepted Answer

5

Answer

56 is divisible by 8; so remainder = 29 mod 8 = 29 − 24 = 5.

Question 4

The probability of getting a head when a fair coin is tossed twice is:

Accepted Answer

3/4

Answer

P(at least one head) = 1 − P(no head) = 1 − 1/4 = 3/4.

Question 5

If a:b = 2:3 and b:c = 4:5, then a:b:c is:

Accepted Answer

8:12:15

Answer

Make b common: a:b = 8:12 and b:c = 12:15; so a:b:c = 8:12:15.

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