16 . The sum of three consecutive number is 123, The product of two smaller number is :

A. 900
B. 1600
C. 1680
D. 1640

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Answer: Option D

Explanation:

Let,
the three numbers are x, x+1, x+2

Here, two smaller numbers are x, x+1 respectively

The sum of three consecutive number is 3X+3 = 123
so, X= (123-3)/3
= 40
Two smallers numbers are 40 and 41 respectively
So their product is 40*41
= 1640

Answere: 1640

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17 . x/2+3 = x/3+4. In this equation what is the value of x?

A. 7
B. 6
C. 5
D. 4
E. None of them

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Answer: Option B

Explanation:

x/2 + 3 = x/3 + 4

or, x/2 - x/3 = 4 - 3

or, (3x - 2x)/6 = 1

∴ x = 6

ans: 6