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Q23) What comes in place of '?' 5, 43, 11, 38, ?, 33, 23 1) 8 2) 14 3) 43 4) 44 Solution: The series specified above is made up of two series. First series is 5, 11, ?, 23 second series is 43, 38, 33,... Pattern used in first series is +6, +6,... So, required number is 11 + 6 = 17 Hence, option 2. Q24) What comes in place of '?' 5, 43, 11, 38, ?, 33, 23 1) 8 2) 14 3) 43 4) 44 Solution: The series specified above is made up of two series. First series is 5, 11, ?, 23 second series is 43, 38, 33,... Pattern used in first series is +6, +6,... So, required number is 11 + 6 = 17 Hence, option 2. Q25) What comes in place of '?' 61, 52, 63, 94, 46, ? 1) 96 2) 18 3) 36 4) None of these Solution: Perfect squares written in reverse order. 16, 25, 36, 49, 64, 81. So, required number is 18. Hence, option 2. Q26) What comes in place of '?' 8, 12, -24, -60, 180, ? 1) -630 2) -540 3) 540 4) None of these Solution: 12 = 8×1.5, -24 = 12(-2), -60 = -24×2.5, 180 = -60(-3) Required Number = 180×3.5 = 630 Hence, option 4. Q27) What comes in place of '?' 2, 5, -1, 11, -13, ? 1) 27 2) 35 3) -48 4) None of these Solution: Pattern used is +3,-6,+12,-24,+48. Required Number = -13 + 48 = 35 Hence, option 2. |