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In the following question, select the related Number/Numbers from the given alternatives. 4578 : 8 :: 289 : ?

A7

B8

C9

D10

Answer:

C. 9

Read Explanation:

4578 = 4 + 5 + 7 + 8 = 24 = 2 × 4 = 8 289 = 2 + 8 + 9 = 19 = 1 × 9 = 9


Related Questions:

In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the number-pair in which the numbers are related in the same way as are the numbers of the following number-pairs. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

21, 105

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In the given letter-cluster pairs, the first letter-cluster is related to the second letter-cluster following a certain logic. Study the pairs carefully, and from the options, select the pair that follows the same logic.

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In the following question, select the related number from the given alternatives. 83 : 25 : : 29 : ?
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