Mathematics
Grade5
Easy

Question

The number belongs in the blank is?
18, 24, ___,36, 42

  1. 28
  2. 31
  3. 30
  4. 35

Hint:

Check the difference between the numbers.

The correct answer is: 30


    18, 24, ___,36, 42
    The difference between each number is 6.
    The rule for this sequence is to add 6 each time.
    The missing number in the sequence: 24 + 6 = 30.

    The given sequence: 18, 24, ___,36, 42
    18, 24, ___,36, 42
    The difference between 18 and 24 is 6. (24-18=6)
    Similarly, the difference between 42 and 36 is 6. (42-36=6)
    Therefore, the difference between the blank and 24 will also be 6. (__-24=6)
    Only option (b) satisfies this.The correct option is (b) 30.

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