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rahul kumar

· started a discussion

· 1 Months ago

ddddd (Question:157223.0)

why not 961

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) 


mudita

· 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

Rajakumari

· commented

· 1 Months ago

31*31 =961.... unit digit is 1 .... 1 is not in d option ..and also none of those not in option ..that's y option B
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