Instructions

In each of the following questions, some equations are solved on the basis of certain system. Find out the correct answer for the unsolved equation on that basis.

Question 3

2 × 4 × 6 = 4; 9 x 3 x 7 = 13;
4 × 7 × 6=3; 9 × 7 × 8 =?

Solution

The pattern followed is that all the numbers are added and twice of the middle number is subtracted from the sum to obtain final result.

Eg : 2 × 4 × 6 = $$(2+4+6)-(2\times4)=12-8=4$$

and 9 × 3 × 7 = $$(9+3+7)-(2\times3)=19-6=13$$

and 4 × 7 × 6 = $$(4+7+6)-(2\times7)=17-14=3$$

Similarly, 9 × 7 × 8 = $$(9+7+8)-(2\times7)=24-14=10$$

=> Ans - (A)

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2 × 4 × 6 = 4; 9 x 3 x 7 = 13;4 × 7 × 6=3; 9 × 7 × 8 =?

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2 × 4 × 6 = 4; 9 x 3 x 7 = 13;
4 × 7 × 6=3; 9 × 7 × 8 =?