1.Find the incorrect option:

a. Proper fraction has a large denominator.
b. Irrational number never end.
c. Integer includes negative, zero and positive.
d. Decimal number is called Hindu-Arabic number also.

2.Which one of the following is a monomial?

a. 2 + 3x
b. 3 + x
c. 5a x 36b
d. 20 -1
e. a ÷ e + 3

3.Which of the following is not correct for order of operation?

a. BODMAS
b. PEMDAS
c. Calculation from left to right
d. Calculation of parenthesis is not possible before exponent operation.
e. Calculation of division is not possible before multiplication operation.