Question
Two trains A and B started from a point and running
perpendicularly. if the speed of train A and train B is 3.5 km/hr and 12 km/hr respectively, find the distance between them after 2 hours.Solution
Speed1 = 3.5 km/h Speed2 = 12 km/h Distance, d1 = 3.5 × 2 = 7 km Distance, d2 = 12 × 2 = 24 km As, both are running perpendicularly Hence, the required distance = √(d12 + d22) = √(72 + 242 ) = √(49 + 576) = √625 = 25 km
Complete the series choosing the missing number.
110, 99, 86, ___, 54, 35.
64, 32, 48, 120, 420, ?
What will come in place of the question mark (?) in the following series?
112, 124, 138, 154, ?, 196
12 ? 545 2729 10919
What will come in place of (?) question mark in the given number series.
22, 23, 19, 28, ?, 37
8    12    39      ?       180    216
...What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
12, 27, ?, 113, 141, 285, 313
53 × 38 + 32 × âˆ›54872 = ?
What will come in place of the question mark (?) in the following number series?
21, 42, 67, 96, ?, 166
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