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Direction: In each of the following questions, all the equations except one have been solved according to a certain rule. You are required to solve the unsolved equation following the same rule and to choose the correct answer out of the given options.

  1. 4 - 4 = 17, 6 - 6 = 37, 2 - 2 = 5, 5 - 5 = ?
    1. 27
    2. 26
    3. 20
    4. 24
Correct Option: B

As, 4 - 4 ⇒ 4 x 4 + 1 = 17
6 - 6 ⇒ 6 x 6 + 1 = 37
2 - 2 ⇒ 2 x 2 + 1 = 5
Similarly, 5 - 5 ⇒ 5 x 5 + 1 = 26
∴ ? = 26


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