If a and b are odd numbers, then which of the following is even ?
A. a + b + ab
B. a + b - 1
C. a + b + 1
D. a + b + 2ab
Answer: Option D
Solution(By Examveda Team)
a + b + 2ab is evenExplanation : Sum of two odd number is even number and multiplication of two odd number with 2 always given an even number.
Alternate :
Put , a = 3, b = 5, option (D) will satisfy
This Question Belongs to Arithmetic Ability >> Number System
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Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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