Question

(a) The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3.

Find such pairs of prime numbers upto 100.

(b) Three boys step off together from the same spot. Their steps measure 63 cm, 70cm and

77 cm respectively. What is the minimum distance each should cover so that all can cover the

distance in complete steps?​

Answer 1

Answer:

(a) The pairs of prime numbers are:

• 17 and 71,

• 37 and 73,

• 79 and 97.

Step-by-step explanation:

(a) Prime numbers are the positive integers having only two factors, 1 and the integer itself.