Question 12
(−11)×7 is not equal to
(a) 11×(−7) (b) −(11×7) (c) (−11)×(−7) (d) 7×(−11)
Question 6
If 7x + 4 = 25, then x is equal to
(a) 297
(b) 1007
(c) 2
(d) 3
If (2)m+1×25=4−2 the value of m is
If the expansion of (1+x)20, then coefficients of rth and (r+4)th terms are equal, then r is equal to