A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After each period, 5 minutes are given free to the students. The exact duration of each period is:- A. 42 minutes B. 48 minutes C. 51 minutes D. 53 minutes

What are the differences between similar triangles and congruent triangles?

What are Armstrong numbers?

All real numbers are rational numbers.

A) True

B) False

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:

• (a) 12
• (b) 4
• (c) 20
• (d) 44

Are all natural numbers also whole numbers?