A farmer divides his herd of x cows among his 4 son's such that first son gets one-half of the herd, the second son gets one fourth, the third son gets one-fifth and the fourth son gets 7 cows, then the value of x is:

A farmer divides his herd of n cows among his four sons, so that the first son gets one-half the herd, the secondson gets one fourth, the third son gets 1/5 and the fourth son gets 7 cows. Then the value of n is

A man divided his property so that his son's share to his wife's and wife's share to his wife's and wife's share to his daughter's are both as in the ratio 3: 1. If the daughters get Rs 10,000 less than son, the value (in rupees) of the whole property is :

when an electron jumps from the fourth orbit to the second orbit, one gets the

A has certain amount in his account. He gives half of this to his eldest son and one third of the remaining to his youngest son. The amount with him now is :