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Let the length of train be ‘x’ meter. => x = 25 x 72 x (5/18) = 500 m Time required to cross the platform = (500 + 160)/[72 x (5/18)] = 660/20 = 33 sec
81 72 136 111 ? 278
...98, 122, 182, 278, 410, ?
4, 4, 5, ? , 248, 1248
What will come in place of the question mark (?) in the following series?
12, 13, 22, 47, 96, 177, ?
4, 9, 25, ?, 121, 169
300, 150, 150, ?, 450, 1125
86, 127, ?, 209, 250, 291
101, 103, 107, 109, 113, ?