In an envelope there are some 5 rupee notes and some 10 rupee notes. Total amount of these notes together is 350 rupee. Number of 5 rupee notes is 10 less than twice the number of 10 rupee notes. Then find the number of 5 rupee and 10 rupee notes.

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?