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CTET 7 Feb 2026 Paper 1, Question 32

Topic: Operations on numbers

Q32

If 101×210−120×102=99×104−□101 \times 210 - 120 \times 102 = 99 \times 104 - \square, then what is the number at □\square?

  1. (1) 1326Correct answer
  2. (2) 1327
  3. (3) 1329
  4. (4) 1336

Solution.

CBSE answer: (1)

Answer: (1) 1326

  1. Left side: 101×210=21210101 \times 210 = 21210 and 120×102=12240120 \times 102 = 12240, so 21210−12240=897021210 - 12240 = 8970.
  2. Right side: 99×104=1029699 \times 104 = 10296.
  3. 10296−□=897010296 - \square = 8970, so □=10296−8970=1326\square = 10296 - 8970 = 1326.
  4. Check: 10296−1326=897010296 - 1326 = 8970, both sides match.