The food bill of a hostel is partly constant and partly varies as the number of days a student has dined. Yash dined for 25 days and his food bill is Rs2200. Riyan dined for 20 days and her food bill is Rs1800. Find the constant price of the food bill and the charge of dining per day.

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?