Approach plz :
1 and 8 are the first two natural numbers for which 1+2+3+.......+n is a perfect square . which number is fourth such number ?
For how many integers n is (n^4+6n) less than (6n^3 +n^2 )
Anyone here took AIMCAT advance pakage of test series ? They mention online section test as 180 during enrollemnt but i have only 90 available ..is same with others too ?
For how many pairs (a,b) of natural numbers is the LCM of a and b is 2^3*5^7*11^13?
Find sum of all two digit positive integers which exceeds product of their digits by 12 . approach plz
For how many prime numbers p is( p ^2 + 3p -1 )a prime number ?
The no :of positive integers n in the range 12 less than or equals to n less than or equals to 40 such that the product (n-1 )(n-2).......3.2.1. is not divisible by n is ? .
How many divisors of 21600 are perfect squares
six positive numbers are taken at random and multiplied together . then what is the probability that the product ends in an odd digit other than 5. Answer 0.4 or 0.4^6. Confusing answers. Approach pls.
Given a^1/3 = 7^1/3 +26^1/3 + 63^1/3. Find the value of a.
A bus, moving from Delhi to Jaipur overtakes a scooter at 2:00 pm. The bus reaches Jaipur at 4:00 pm and rests for 1 hr. When the bus returns it meets with the scooter again at 5:30 pm. When will the scooter reach Jaipur?
PnC :
In how many ways can 21 identical white balls and 19 identical black balls be arranged in a row so that no 2 black balls are together ?
PnC : In how many ways numbers 1 to 12 can be arranged on a sides of squares (5 places on each sides i.e 20 places total) leaving 8 places empty. ?
b)Here first number can be placed in how many ways ? 5 or 3 ?