√4761 ÷ 23 + √12769 = ? × 58
69 ÷ 23 + 113 = ? x 58 116 = ? x 58 ? = 2
What is the fourth state of matter called?
Black lung disease occurs in people working in
Electric bulbs are filled with :
The nucleus of an atom consists of-
Which of the following is used to remove ink and rust stains on cloth?
Who developed atom bomb ?
