Aptitude and Reasoning Questions

Which of the following statements is/are true/false about speed of sound in different media at 25 °C ?
A. In oxygen gas, the speed of sound is 316 km/s.
B. In water (distilled), the speed of sound is 1498 km/s

Which of the following cube in the answer figure cannot be made based on unfolded cube in the question figure?

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

6 ÷ 10 - 30 + 4 x 12 = ?

ΔABC is right angled at B. If cotA = 7/24, then what is the value of cosecC ?

In a certain code language, “FIR” is written as “33” and “LIT” is written as “41”. How is “TOM” written in that code language?

The difference between simple and compound interest (compounded annually) on a sum of money for 3 years at 10% per annum is Rs. 93. The sum (in Rs.) is:

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:
(I) Children play in the playground.
(II) It gives them a different approach of problem solving and decision making.

Conclusions:
(I) Playing outdoor is very necessary for overall development of child.
(II) There should be balance between playing and studying for a child.

What is the simplified value of (cosec A + sin A)(cosec A – sin A)?