Question
Three natural numbers X,Y,Z are
pairwise co-prime and satisfy the following conditions, the least common multiple (LCM) of X and Y is 391, the LCM of Y and Z is 667, If all three numbers are pairwise co-prime natural numbers, find the sum of X+Y+Z.Solution
ATQ, Since, the numbers are co-prime they will have only 1 as the common factor. So, LCM of X and Y = X×Y = 391 LCM of Y and Z = Y×Z = 667 So, X×Y ÷ Y×Z = 391 ÷ 667 X ÷ Z = 17 ÷ 29 Since, it is given that Z is less than 30 and all the numbers are natural numbers. So, X = 17 and Z = 29 Substituting the value of X we get, Y = 23 Therefore, sum of the three numbers = 17 + 23 + 29 = 69
4, 4, 8, 32, 256, ?
97, 106, ?, 195, 411, 460
17    18      14       ?      7       32
...14.8% of 7200 – 16.4% of 6200 + 15.09% of 8100 = 10% of ?
204, ?, 120, 83, 52, 23
21Â Â Â Â Â Â 24 Â Â Â Â Â Â 22Â Â Â Â Â Â 25Â Â Â Â Â 23Â Â Â Â Â Â Â ?Â
...124, 147, 176, 207, 244, ?
42, 48, 60, 84, 132, ?
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
In each of the following series, one term is missing. Find the missing term.
2, 6, 15, 31, 56, ?
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