2nd question ka answer galat lag rha hai....
00:00???????????????
@datta123 said: 2nd question ka answer galat lag rha hai....
Mera 1 aaya lekin mark karte time gayab ho gaya :D
Ohhhh 😞
@ankita14 said:Mera 1 aaya lekin mark karte time gayab ho gaya
1 st question explain kardo plz....i got ansewr 0
any body expain the solutions
@yesarpit the sum of 1! + 2! + 3! + 4! is 33
and after that when u add 5! that is 120 the unit digit will be 3 only. so carry on adding any factorial from here on i.e 6! + 7! and so on u'll always get the unit digit as 3.
and after that when u add 5! that is 120 the unit digit will be 3 only. so carry on adding any factorial from here on i.e 6! + 7! and so on u'll always get the unit digit as 3.
mjhe 140 pt mile afternoon sesion mein....fir sab band 2 qstn k baad....:(
@yesarpit said:1 st question explain kardo plz....i got ansewr 0
bhai since the series got 5 and 2....numbers will always come with 0.......
we dont have to calculate that much just the sum of first 4
we dont have to calculate that much just the sum of first 4
which one u wanna know
are yaar plz start to karo....pg guys plz help
@yesarpit said:1 st question explain kardo plz....i got ansewr 0
5! onwards all numbers end in 0 to sirf 1! +2!+3!+4! ka last digit khojna hai. 1+2+6+24... Last digit 3.
@farhan_habib91 said: @yesarpit the sum of 1! + 2! + 3! + 4! is 33 and after that when u add 5! that is 120 the unit digit will be 3 only. so carry on adding any factorial from here on i.e 6! + 7! and so on u'll always get the unit digit as 3.
o yes.........thanx farhan....got it now
second question mein to bas 2 he satisfy kr rha tha....bcz ek hi prime number even hai....:)
I thought mere saath hi prblm aa rahi h .... yahan toh sabka bura haal h!!!
only 2 is even prime and its square will yield a even and whn added to an odd no 7 will give odd prime. all other are odd prime and adding 7 will give an even no.. so only one value accptd