Question
Which of the following statements is true about
sound?Solution
Sound is a mechanical wave, so it needs a medium like air, water, or solids. It cannot travel in vacuum (like in space). This is why no sound can be heard in outer space. Reflection of sound is used in SONAR and echo.
I is the mother-in-law of J who is the sister-in-law of H. G is the father of H who is the only brother of K. G is married to I. How is I related to K?
Who among the following person is the mother of D?
If “J#K^P%R#O”, then How O is related to J?
N is married to O. P is the daughter of N, who is the mother-in-law of Q. R is the son of Q. O has only one child. How is O related to Q?
If “D$E*F&G#H”, then How E’s only son is related to F?
M has two sons and one daughter. R and V are the two married sons of M. Q is the son of R. U is the daughter of N. P is married to R. N is married to V....
How is M related to P?
Ankit and Mohit are brothers. Shikha and Shweta are sisters. Ankit’s son is Shweta’s brother. How Mohit is related to Shikha?
How is T related to E?
Who is paternal grandfather of Q?
