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Debashish Raul

· started a discussion

· 1 Months ago

Wong question (Question: 157223.0 )

961 is a square of 31 which is an odd number

Question:
If it is possible to form only one such number with the 3rd, 6th and the 7th digits of the number 7394261 but not in the same order , which is the perfect square of a two digit odd number, then which of the following will be the unit digit of the two digit odd number?
Options:
A) 9
B) 3
C) 5
D) 2
E) 6
Solution:

Ans: (b) 


Knowledge Expert

· commented

· 1 Months ago

it is stated in question "but not in the same order" ... which is 3rd, 6th, and 7th digit cant be in continuous order. so answer can be 14 or 13 but as we want odd digit so answer be 13
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