Question

6 : 21 :: 3 : ? options a. 28 b. 18 c. 32 d. 61​

Answer 1

Step-by-step explanation:

6 : 21 :: 3 : ? options b. 18

6+15 =21

so,3+15 =18

Answer 2

Answer:

Option B is correct.

Step-by-step explanation:

Given:

6 : 21:: 3:?

To find: Find the numbers that should fit the ?.

In this type of problem first, we need to try figuring out the relation between 6:21 numbers and then find the number for 3.

Let us try Finding the relation between 6:21

If we observe carefully we see that 6 x 4 =24 - 3 = 21

If we try to apply this for 3 x 4 = 12 -3 = 9

we get 9 for 3 but this is not there in the options.

Since the above is not possible we should try another way.

6 + 15 =21,

For the number 3, we get

3 + 15 = 18

Therefore, 6 : 21:: 3: 18 is correct.

Hence, Option B is correct.

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