Question #1: 0, 5, 8, 17, 24, 37, ?

Explaination: 12 -1 =0, 22 +1 = 5, 32 -1=8, 42 +1= 17,..... , 72 -1 = 48 Ans

Question #2: 110, 99, 86, ?, 54, 35

110-11 = 99, 99-13=86, 86-15 = 71 (Ans), 71-17=54 ....

Question #3: 1, 3, 7, 15, 31, 63, 127, ?

1 × 2 + 1 = 3, 3 × 2 + 1 = 7, 7 × 2 + 1 = 15, similarly  127 × 2 + 1 = 255

Question #4: 10, 18, 26, 34, ?, 50

Explaination: 10+8= 18, 18+8 = 26, 26+8 = 34 , 34+ 8 = 42 Ans.

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