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Sanjukta

· started a discussion

· 1 Months ago

Numbers

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?
A- 9
B- 3
C- 5
D- 2
E- 6

Monika

· commented

· 1 Months ago

B-3
using 1,6, and 9
13 sq (odd number) = 169
14 sq = 196
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