What of the following biomes does not have a tree?

Direction: In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word as your answer.

Meddle

In the following question, two signs and two numbers need to be interchanged to make it correct. Select the appropriate signs and number from the given alternatives.
6 × 8 + 2 = 20

$$ {tan7°tan23°tan60°tan67°tan83°}$$ is equal to-

In the following question, select the word which cannot be formed using the letters of the given word.
CAPABILITIES

If 80 Persons can finish a work in 16 days by working 6 hours a day, the number of hours a day should 64 persons work to finish that same job in 15 days is:

The least number, which is a perfect square and is divisible by each of the numbers 16, 20 and 24 is 

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word