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Let present age of A be x years. => 140% of (x - 5) = 70% of (x + 5) => 2(x - 5) = (x + 5) => 2x – 10 = x + 5 => x = 15 years
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, ?