**Slot -2 – Quantitative Aptitude – Modern Maths – P & C – How many two-digit numbers**

** How many two-digit numbers, with a non-zero digit in the units place, are there which are more than thrice the number formed by interchanging the positions of its digits?**

a) 6

b) 8

c) 7

d) 5

**Answer:** 6

**Solution:**

Let the number is ab so

10a+b >3(10b+a)

7a>29b

a/b>29/7

So the possible pair of (a,b) are (5,1), (6,1), (7,1) , (8,1) , (9,1) & (9,2)

Thus total 6 such numbers are possible.

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