other Exam Numerical Ability Probability

The Probability that leap year chosen at random will have 53 Sundays is

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other Other Question
. In subtraction problem below, some single digits (not necessarily distinct) are replaced by letters. Find the value of 7*A+5*B+6*C*D
A 5 C 5
-1 B 8 7
All 3 digit no. in which ten's digit is a natural number and is a perfect square are formed using the digits 1 to 9.Sum of all such no. is

a) 134055
b) 270540
c) 170055
d) 149085