Instructions

These questions are based on the five three digit numbers given below :
346 815 428 271 732

Question 66

If ‘1’ is added to the first digit of every number and ‘1’ is subtracted from the third digit of every number, in how many numbers thus formed will the difference between first and third digits be more than 5 ?

Solution

Series : 346 815 428 271 732

If ‘1’ is added to the first digit of every number and ‘1’ is subtracted from the third digit of every number, new numbers

346 -> 445 = $$5-4=1$$

815 -> 914 = $$9-4=5$$

428 -> 527 = $$7-5=2$$

271 -> 370 = $$3-0=3$$

732 -> 831 = $$8-1=7$$ (difference more than 5)

=> Ans - (E)

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