In a sale, out of 30 buyers, 10 buyers bought 5 or fewer items, 22 buyers bought fewer than 8 items and 14 buyers bought at least 7 items. Find the numbers of buyers who bought exactly 6 items.
sin36 sin72 sin108 sin144=?
please provide the solution for all the ques.
Hello sir , kindly share the solution to this problem -
A retailer has 'n' stones of distinct integral weights (in kg) by which he can measure from 1 kg to 11 kg keeping them on either side of the weighing machine. Find the minimum value of 'n'.
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.
n is a positive integer such that: 1 + 2 + 22 + 23 + … + 2n = 22n – 49. Find n.
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 was the same age as Megha is now , and Megha was twice as old as her niece. How old is Madhavi ?
correct ans: 30
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 know its weight. How many least number of times the spring-balance must be used to identify the faulty ball?
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 number of 1's occurring in the number and so on until the 10th digit represents the number of 9's in the number.
The sum of the digits of the number is: