The average earning of a shop for first three weeks of a month are 2750 per week. if the earnings of next 2 weeks are 4750 rupees then find total earnings of the 5 weeks.
a. 3000 b. 17500
c. 17750 d. 13000
e. none

What is the value of the digit 1 in the number 13?

Empty box + box + empty box fill in the box is equal to 30 how

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)