13. product of two numbers is 2668, one number is 58, then second number is

Find the limit of (n/(n+1))^n when n goes to infinity

12 students can do a job in 10 days, but on the starting day, two of them informed that they are not coming, by what fraction will the number of days required for doing the whole work get increased? a)4/5b)3/8c)3/4d)1/5​

If cot a-tan a=2 cot 2a, then tan a +2tan 2 a + 4 tan 4 a +8 cot 8 a =(1) tan a(2) sin a(3) cos a(4) cot a​