Which is not the prime number?
How many terms are there in 3,9,27,81……..531441?
If the average of four consecutive odd numbers is 16, find the smallest of these numbers?
If the sum of two numbers is 13 and the sum of their square is 85. Find the numbers?
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
A two-digit number is such that the product of the digits is 12. When 9 is subtracted from the number, the digits are reversed. The number is:
Find a positive number which when increased by 16 is equal to 80 times the reciprocal of the number
What is the sum of two consecutive odd numbers, the difference of whose squares is 56?
The product of two numbers is 108 and the sum of their squares is 225. The difference of the number is:
The average of 21 results is 20. Average of 1st 10 of them is 24 that of last 10 is 14. the result of 11’th is :
What could be the maximum value of Y in the following equation given that neither of X, Y, Z is zero? 5X8 + 3Y4 + 2Z1 = 1103
Which of the following are prime numbers ?
What is the unit’s digit in the product (267)153 x (66666)72 ?
What is the total number of prime factors in the expression 1212 x 1616 x 1818 ?
What should be assigned to # so that 2582#724 is divisible by 11 ?
You are given the largest number of 5-digit, you have to subtract x from this number so that the number is divisible by 23. Find the smallest possible value of x.
On dividing 201098 by a certain number, the quotient is 67 and the remainder is 31. Find the divisor.
A number leaves remainders 1, 4 and 7 on being divided successively by 3, 5 and 8 respectively. What is the product of the remainders when the order of divisors is reversed ?
What is the smallest number which when divided by 6, 9, 11, 16 and 22 leaves remainder 3 in each case ?
What is the largest number which divides 26, 47, 84 to leave remainders 2, 3, 0 respectively ?
Three friends started running together on a circular track at 8:00:00 am. Time taken by them to complete one round of the track is 15 min, 20 min, 30 min respectively. If they run continuously without any halts, then at what time will they meet again at the starting point for the fourth time ?
The LCM of two co-prime numbers is 117. What is the sum of squares of the numbers ?
HCF of two numbers is 11 and their LCM is 385. If the numbers do not differ by more than 50, what is the sum of the two numbers ?
Two numbers are in the ratio of 5:7. If their LCM is 105, what is the difference between their squares ?
Which is the largest number that divides 17, 23, 35, 59 to leave the same remainder in each case ?
Which of the following is the largest of all?
A partial order P is defined on the set of natural numbers as follows.
What is the missing number in the following sequence? 2, 12, 60, 240, 720, 1440, …. 0
