In the adjoining figure ∠AOC=140° where O is the centre of the circle then ∠ ABC is equal to:

A tower standing on a horizontal plane subtends a certain angle at a point 160 m apart from the foot of the tower. On advancing 100 m towards it, the tower is found to subtend and angle twice as before. The height of the tower is

The distribution of fruit consumption in a sample of 72 seventeen – year – old girls is given in the graph below. Study the graph and answer the questions.

Distribution of Fruit Consumption

How many of these girls ate more than tow serving but less than six serving per day?

The distribution of fruit consumption in a sample of 72 seventeen – year – old girls is given in the graph below. Study the graph and answer the questions.

Distribution of Fruit Consumption

How many of these girls ate fewer than two servings per day? 

The distribution of fruit consumption in a sample of 72 seventeen – year – old girls is given in the graph below. Study the graph and answer the questions.

Distribution of Fruit Consumption

What percent of these girls ate six or more servings per day

The total surface area of a hemisphere is 166.23 sq cm, find its radius?

Thrice the square of a natural number decreased by four times the number is equal to 50 more than the number. The number is :

Study the given graph carefully to answer the questions that follow:

If carpenter X and carpenter Y were to make a chair together how many days would they take?