Find the smallest number, which when divided by 8, 12, 20 or 25 leaves a remainder
5 in each case?
(A)595
(B) 605
(C) 1205
(D)1195
Answers
Answer:
595 are the smallest number, which when divided by 9,12,20 or 25 leaves a remainder 5 in each case.
The correct answer is option (B) 605
GIVEN
Divisor- 8, 12, 20, 25
TO FIND
The smallest number when divided by the given numbers leaves 5 as a remainder.
SOLUTION
We can simply solve the above problem as follows-
To find the lowest possible number, we will first calculate the LCM of 8, 12, 20, and 25.
LCM OF 8, 12, 20, and 25. -
2 | 8 12 20 25
2 | 4 6 10 25
2 | 2 3 5 25
3 |1 3 5 25
5 | 1 1 5 25
5 |1 1 1 5
1 |1. 1. 1. 1
LCM = 2×2×2×3 ×5×5 = 600
So, 600 is the smallest number which will be exactly divided by 8, 12, 20 and 25
But we have to find the number which will leave 5 as a remainder.
The smallest number will be 600+5 = 605.
Hence, the smallest number when divided by 8, 12, 20, and 25 will leave a remainder of 5 is 605.
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