How many numbers are there from 400 to 700 in which the digit 6 occurs exactly twice?
A. 20
B. 19
C. 18
D. 21
Answer: Option A
Solution(By Examveda Team)
From 400 to 500 = only 466From 500 to 600 = only 566
From 600 to 700 ⇒ 606, 616, 626, 636, 646, 656, 676, 686, 696 and 660, 661, 662, 663, 664, 665, 667, 668, 669
Total numbers = 20
Related Questions on Number System
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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