We know the identity (a + b + c)2 = a2 + b2 + c2 + 2ab + 2ac + 2bc (4)2 = 8 + 2(xy + yz + zx) (xy + yz + zx) = 8/2 = 4 a3 + b3 + c3 = (a + b + c) (a2 + b2 + c2 – ab – bc – ca) + 3abc So, x3 + y3 + z3 = 4(8 – (4)) + 3(6) = 16 + 18 = 34
Find the upcoming numbers in this series.
169, 146, 157, 134, 145,?
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the w...
The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are f...
Select the figure that will come in place of the question mark (?) in the following figure series.
Pointing towards a woman, Alllwyn said, “She is the mother of my brother’s son’s brother’s mother’s husband.” How is that woman related to A...
Select the related word from the given alternatives.
School : Principal :: Newspaper : ?
Artist : Painting :: Cobbler : ?
Vasant says, “I have as many sisters as brother”. Vaishali say, “Each of us sisters has only half as many sisters as brothers”. Assuming that Va...
After interchanging the given two signs what will be the values of equation (I) and (II) respectively?
× and ÷
I. 18 ÷ 3 – 4 × 2...
What should come in place of '?' in the given series?
10 59 353 ? 12701 76205 457229
