Elitmus Exam

find the total number of prime numbers contained in (15)^10*(14)^12(62)^7.
option
a)none
b)58
c)48
d)62

Read Solution (Total 1)

option b)
we can factorize
15 as (3*5) i.e both factor are prime and it has a power 10 thats mean it contain 20 prime nos. Same process applied for the remaining we will get
total no. of prime = (20+24+14)=58
11 years agoHelpfull: Yes(19) No(5)

Elitmus Other Question

the principal want to arrange 5 student on the plateform such that the boy shyam occupies the second position and such that the girl geeta is always adjacent to the girl anitha. how many such arrangement are possible?
option
a)none
b)7!*5!
c)3!*5!
d)3!*7!
e) 3!*2! In how many years will a sum of money becomes triple at 10% per annumm
option
a)10
b)15
c)30
d)none