Question
The least perfect square number which is divisible by 9,
12, 15, 24:Solution
lcm OF 9, 12, 15, 24. 9=3×3 12=2×2×3 15=3×5 24=2×2×2×3 .LCM=2×2×2×3×3×5=360 To make the number perfect square multiply by 2 and 5 in 360, then =360×5×2 =3600
164, 20, 216, -40, 284, -112
60, 63, 71, 86, 125, 145
Find the wrong number in the given number series.
11, 20, 38, 78, 154, 310420, 380, 340, 300, 280, 220, 180
Find the wrong number in the given number series.
7, 15, 46, 93, 282, 561
21, 23, 27, 35, 51, 87
-2, 0, 8, 32, 64, 66
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
273, 204, 138, 84, 39, 3
23 30 44 65 92 128