@sachisurbhi said:how many natural numbers below 50 are there in the condition that satisfying (n-1)! is not a multiple of n ?a)15b)14c)17d)16
Q3
@sachisurbhi said:if y (y>=4) is an even natural number and x=y^2 -2y, then the largest natural number that divides x^2 - 8x isa)192b)144c)384d)96
c?
solve x in terms of y.
x^2-8x = y^4 - 4y^3 -4y^2 + 16y
= (y-4)(y+2)(y-2)y
y>=4 ... put 6 and find out the value. 6*2*8*4 = 384.
solve x in terms of y.
x^2-8x = y^4 - 4y^3 -4y^2 + 16y
= (y-4)(y+2)(y-2)y
y>=4 ... put 6 and find out the value. 6*2*8*4 = 384.
@sachisurbhi said:how many natural numbers below 50 are there in the condition that satisfying (n-1)! is not a multiple of n ?a)15b)14c)17d)16
16 ?
all prime no.s
@vbhvgupta said:Q3
500 ?
80x - 325 + 325 + 70x - 325 + 15x = 100x
x = 5
total no. of students = 5*100 = 500
@sachisurbhi said:how 16? plz explain
For all the prime numbers and 4 it wont be divisible by n u can try by taking few numbers...
Q4
@vbhvgupta said:Q4
let the reduced price be x
x*150/100*n = 82.5/100*n*250
x = 137.5
deduction = 250 - 137.5 = 112.5 ?
Q1> see attachement
pradip tore a certain number of consecutive leaves from his book.Each leaf is numbered on either side and is considered to be two pages.if the sum of pages which he tore off was 720.how many pages did he tear off
a)16
b)32
c)42
d)45