Question
Study the given pattern carefully and select the number
that can replace the question mark [?] in it.Solution
The logic followed here is as follows: In each row, first we add all the numbers of first 3 columns and then, the sum is multiplied by '2' to get the number given in last column of the particular row. In row 1, [59, 23, 34, 232]: = [59 + 23 + 34] X 2 = 116 X 2 = 232 In row 3, [29, 10, 35, 148]: = [29 + 10 + 35] X 2 = 74 X 2 = 148 Similarly, in row 2, [37, 28, 33, ?]: = [37 + 28 + 33] X 2 = 98 X 2 = 196
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If  a 2 + b 2 + c 2 = 40 & ab + bc + ca = 12 then a + b+ c = ?
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