One angstrom is equal to __________ .
10-9 m
10-10m
10-11m
10-12m
One angstrom (1o) is equivalent to 10-10m.
Find the middle term(s) in the expansion of (a+b)21
Find the middle term(s) in the expansion of (a+b)20
If (10)9+2(11)1(10)8+3(11)2(10)7+...+10(11)9=k(10)9, then k is equals to: (IIT JEE Main 2014)
A two digit number is given by 10a + b , then number obtained by reversing its digits is ___________