Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If the integers m and n are chosen at random between 1 and 100, then the probability that a number of the form 
is divisible by 5 equals
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Since 
and 
are selected between 1 and 100, hence sample space 
Also 
, 
, 
, 
, 
etc. Hence 
and 9 will be the last digits in the powers of 7. Hence for favourable cases
……………………………………
For 
Favourable cases = 25
For 
Favourable cases = 25
Similarly for every 
favourable 
are 25.
Total favourable cases 
Hence required probability 
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