Number Series and Simplification MCQs – Page 2

Solved Mathematics MCQs on number and letter series, missing numbers and BODMAS simplification, with clear step-by-step reasoning.

1. 21

   What is √144 + √81?

   A225B21C25D15

   Correct answer: B. 21

   √144 = 12 and √81 = 9, so the sum is 21.

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2. 22

   What is 999 × 11?

   A11,089B9,999C10,989D10,899

   Correct answer: C. 10,989

   999 × 11 = 999 × 10 + 999 = 9,990 + 999 = 10,989.

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