Average of 8 numbers = 12 Sum of 8 numbers = 12 × 8 = 96 Now the sum of numbers added, 2, 4, 8, 16 …….. 8 terms Sum of 12 terms S₁₂ = a`xx` (rn-1))/(r-1) = 2 `xx` (28-1))/(2-1) = 2×255 = 510 New average = (96+510)/8 = 75.75
If numerator of a fraction is decreased by 30% and the denominator of the same fraction is increased by 40%, then what fraction of the old is the new fr...
If the numerator of a fraction is increased by 25% and the denominator is decreased by 10%, the value of the new fraction 25/24, Find the original faction.
Which of the following fractions lies between 3/7 and 8/9?
If the numerator of a fraction is decreased by 20% and the denominator of the same fraction is increased by 30%, then what fraction of the old is the ...
Numerator of a fraction is 4 less than the denominator. If 6 and 7 are added to numerator and denominator of a fraction respectively, then fraction beco...
There is a fraction whose denominator is 5 more than its numerator. If the numerator is increased by 10 and denominator is decreased by 4, the fraction ...
0.0056 is equal to which of the following fractions?
