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Standard XII

Mathematics

Summation by Sigma Method

In the follow...

Question

In the following multiplication problem, find the numerical values of S, W in that order
S 3 4 5 W
$\times$ 2
------------------------
4 6 9 1 2

2, 6

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3, 1

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2, 1

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2, 2

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Solution

The correct option is A $2, 6$
Given, S345W $\times$ 2 $= 46912$
$W$ can take the value $1$ or $6$
If $W = 1$ then the second-last digit will be zero which is false
So, $W = 6$
Then we get $S = 2$
Thus, the values of S, W are $2, 6$ .
Hence, option (A) is the correct answer.

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Balance the following equation, and hence choose the values of the coefficients w, x, y, z:
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In the following multiplication problem, find the numerical values of S, W in that order S 3 4 5 W× 2------------------------ 4 6 9 1 2

The correct option is A 2,6Given, S345W × 2 =46912W can take the value 1 or 6If W=1 then the second-last digit will be zero which is falseSo, W=6Then we get S=2Thus, the values of S, W are 2,6.Hence, option (A) is the correct answer.

In the following multiplication problem, find the numerical values of S, W in that order
S 3 4 5 W
$\times$ 2
------------------------
4 6 9 1 2

The correct option is A $2, 6$
Given, S345W $\times$ 2 $= 46912$
$W$ can take the value $1$ or $6$
If $W = 1$ then the second-last digit will be zero which is false
So, $W = 6$
Then we get $S = 2$
Thus, the values of S, W are $2, 6$ .
Hence, option (A) is the correct answer.