any other approach?

There exists a 10 digit number such that the 1st digit from left represents the number of 0's in the number, the2nd digit from left represents the num...

A bag contains 10 identical balls. All except one ball are of 10gm each. We can use a spring-balance, where we can hang the object in attached pan to ...

Medha and Megha are sisters . Madhvi is Medha's daughter and 12 years younger than her aunt . Medha is twice as old as Madhvi . Four years ago, Medha ...

2

0 1 2 4

n is a positive integer such that: 1 + 2 + 22 + 23 + … + 2n = 22n – 49. Find n. 6 5 4 3

N is a smallest such positive integer such that when It’s left most digit is removed, then remaining number is 1/37th of N. Find sum of digits of N. 1...

Any other approach? I'm not comfortable with trigonometry..

please provide the solution for all the ques.

correct.. solution please