Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number result(s) in the second number. Similarly, certain mathematical operation(s) on the second number result(s) in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (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.)
18 – 36 – 72 – 107
15 – 30 – 60– 95
22 – 44 – 88 – 123
The operation is 18 – 36 – 72 – 107
18 * 2 = 36 * 2 = 72 + 35 = 107
Similarly,
22 * 2 = 44 * 2 = 88 + 35 = 123. and other doesn't follow the same rule. So, this is the correct answer.
Select the number from among the given options that can replace the question mark (?) in the following series.
240, 120, ?, 180, 360, 900
Select the number from among the given options that can replace the question mark (?) in the following series.
37, 52, 74, 104, 143, ?
Which of the following numbers will replace the question mark (?) in the given series?
31, ?, 40, 49, 61, 76
Which number will replace the question mark (?) in the following series?
12, 25, 51, 103, ?, 415, 831
Which of the following numbers will replace the question mark (?) in the given series?
25, 15, ?, −5, −15
Select the related word/letters/numbers from the alternatives:
01 : 36 : : 02 : ?
A series is given, with one term missing. Choose amongst the given responses the meaningful one:
206, 221, 251, 296, ?, 431
In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation:
53 - 34 = 5334
65 - 46 = 6456
75 - 24 = ?
Select the related word/letters/numbers from the given alternatives:
12 : 39 : : 15 : ?
A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
4, 9, 16, 25, 36, ?
What will come in place of question mark (?) in the following number series?
2, 5, 11, 23, 44, 77, ?
What will come in place of question mark (?) in the following number series?
31, 32, 36, ?, 61, 86
What will come in the place of question mark (?) in the following number series?
3, 6, 18, ?, 630, 6930
What should come in place of the question mark ‘?’ in the following number series?
60, 40, 50, ?, 180, 460
A series is given with one term wrong. Select that wrong term from the given alternatives.
J12, M24, P48, S96, U192