26 = (2 x 15 - 4)
? = 15
As, 235 ? 253
The middle digit of first term becomes power to the next term.
Thus the difference of the first number and the sum of the digits of second number is 10 - 8 = 2.
Similarly, the sum of the digits of third number is 2 + 7 = 9.
Hence the sum of digits of fourth number should be 2 more than 9 i.e. 11
Hence, fourth number is 65.
Similarly, 32:112:(2/7)
Similarly, (7)2 + 3 = 52
Similarly, (120/300) = (2/5)
Similarly, 987 - X = 119
Therefore, X = 987 - 119 = 868.
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