Find (61+62+63+......+110)=?

Ramesh has 6 friends. In how many ways can be invite one or more of them at a dinner ? (A) 61 (B) 62 (C) 63 (D)64

The weights in kilograms of 60 workers in a factory are given in the following frequency table. Find the mean weight of a worker. Weight (in kg) x: 60 61 62 63 64 65 No. of workers f: 5 8 14 16 10 7

Fill in the blanks with appropriate items : Symbol is needed to complete the nuclear equation ._(29)^(63)Cu (P, ....). _(29)^(62)Cu

Which of the following lanthanoid ions is diamagnetic ? (At. nos. Ce = 68, Sm = 62, Eu = 63, Yb = 70)

Find : cos 62^(@) 27'

Answer the following : 76, 57, 80, 103, 61, 63, 89, 96, 105, 72. Find the range for the following data.

N = 4^(61) + 4^(61) + 4^(62) + 4^(62) . Choose the correct statement(s): I. N is divisible by 3. II. N is divisible by 5. III N is a perfect square.

Which of the following lanthanoid ions is diamagnetic ? (At nos . Ce = 58 , Sm = 62, Eu = 63 , Yb =70)