45. The difference of the sum of prime numbers and sum of composite numbers in between
11 to 20 is completely divisible by which of the following numbers?
(A) 2
(B) 5
(C) 7
(D) 13
(1) A and B (2) B and C (3) C and D (4) A and D
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The difference of the sum of prime numbers and sum of composite numbers in between 11 to 20 is completely divisible by 2 & 13 ( option 4 ( A & D) )
Step-by-step explanation:
Prime number between 11 & 20 are
13 , 17 , 19
13 + 17 + 19 = 49
Composite number between 11 & 20 are
12 , 14 , 15 , 16 , 18
12 + 14 + 15 + 16 + 18 = 75
75 - 49
= 26
26 = 2 & 13
Divisible by 2 & 13
Divisible by A & D
option 4 is correct
The difference of the sum of prime numbers and sum of composite numbers in between 11 to 20 is completely divisible by 2 & 13
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