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Q28) What comes in place of '?' 1, 2, 6, 21, 88, 445, ? 1) 2230 2) 3122 3) 2676 4) None of these Solution: Logic is 1×1 + 1 = 2, 2×2 + 2 = 6, 6×3 + 3 = 21, 21×4 + 4 = 88, 88×5 + 5 = 445 Required number = 445×6 + 6 = 2676 Hence, option 3. Q29) 2, 3, 18, 115, 854, ? 1) 6992 2) 6913 3) 7767 4) 7059 Solution: 3 = 2×1 + 12, 18 = 3×3 + 32, 115 = 18×5 + 52, 854 = 115×7 + 72 Required number = 854×9 + 92 = 7767 Hence, option 3. Q30) What comes in place of '?' 2, 7, 32, 119, 492, ? 1) 1932 2) 1993 3) 1968 4) 1943 Solution: Logic is 2×4 - 1 = 7, 7×4 + 4 = 32, 32×4 - 9 = 119, 119×4 + 16 = 492 Required number = 492×4 - 25 = 1943 Hence, option 4. Q31) What comes in place of '?' 5, 15, 48, 171.5, 690, ? 1) 3109.5 2) 2764 3) 2164 4) 3164.5 Solution: Logic is 5×2.5 + 2.5 = 15, 15×3 + 3 = 48, 48×3.5 + 3.5 = 171.5, 171.5×4 + 4 = 690 Required number = 690×4.5 + 4.5 = 3109.5 Hence, option 1. Q32) What comes in place of '?' 2, 5, 9, 19, 37, ? 1) 78 2) 74 3) 73 4) 75 Solution: Logic is 2×2 + 1 = 5, 5×2 - 1 = 9, 9×2 + 1 = 19, 19×2 - 1 = 37 Required number = 37×2 + 1 = 75 Hence, option 4. |