Question

The students of Class X of a school decided to donate their pocket money to purchase mineral water bottles for
the people using contaminated water in a nearby village. They packed the mineral water bottles in different boxes.
These boxes contained varying number of mineral water bottles. The following table shows the distribution of
mineral water bottles according to the number of boxes:
Number of mineral water bottles
Number of boxes
50 - 52
20
53 - 55
120
56 - 58
105
59 - 61
125
62 - 64
30
Find the mean number of mineral water bottles kept in a packing box.​

Answer 1

Answer:

1825

1825- 1826

William Sturgeon (British) invents the electromagnet, a coil of wires with an iron core to enhance the magnetic field.