Basic Mathematics MCQs Subcategories

Basic Mathematics MCQs	Series MCQs
Basic Mathematics	Algebra
Calculation	Angles

Simplify 4 + 2 x 3 – 6 + 2 = ?

A. 2
B. -2
C. 6
D. None of these

Explanation: Step-by-Step Solution: 1. **Multiplication first**: ( 2 times 3 = 6 ) Now the expression becomes: ( 4 + 6 - 6 + 2 ) 2. **Addition and Subtraction (left to right)**: - ( 4 + 6 = 10 ) - ( 10 - 6 = 4 ) - ( 4 + 2 = 6 ) Final Answer : 6

Which number is wrong in the series: 1, 2, 6, 15, 31, 56, 91.

A. 31
B. 91
C. 56
D. 15

Explanation: The differences 1, 4, 9, 16, 25 are perfect squares. The wrong number in the series is 91, because the difference between 56 and 91 should be 36 (not 35) to maintain the pattern of perfect squares.

The value of an article purchased 2 years ago depreciates at 12% per annum. If its present value is Rs 9680, the price at which it was purchased is:

A. Rs. 10000
B. Rs. 12500
C. Rs. 14575
D. Rs. 16250