A discount series of `p % and q %` on an invoice is the same as a single discount of a. `[p+q+(p q)/(100)]%` b. `[p-q+(p q)/(100)]%` c. `100-[p+q+(p q)/(100)]%` d. none of these

A discount series of p% and q% on an invoice is the same as a single discount of a.[p+q+(pq)/(100)]% b.[p-q+(pq)/(100)]% c.100-[p+q+(pq)/(100)]% d.none of these

In an A.P. of which a is the first term if the sum of the first p terms is zero, then the sum of the next q terms is a. (a(p+q)p)/(q+1) b. (a(p+q)p)/(p+1) c. -(a(p+q)q)/(p-1) d. none of these

In an A.P.of which a is the first term if the sum of the first p terms is zero,then the sum of the next q terms is a.(a(p+q)p)/(q+1) b.(a(p+q)p)/(p+1) c.-(a(p+q)q)/(p-1) d.none of these

If p and q are primes such that p=q+2 prove that p^(p)+q^(q) is a multiple of p+q

The number 0.3 in the form (p)/(q), where p and q are integers and q!=0, is (33)/(100) (b) (3)/(10)( c) (1)/(3)( d) (3)/(100)