Answer: C) Vacuum Explanation: Sound waves cannot travel through a Vacuum.   A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

Answer: D) बग स्पष्टीकरण: कंप्यूटर प्रौद्योगिकी में, कंप्यूटर प्रोग्राम में कोडिंग त्रुटि को बग कहा जाता है।

Answer: B) Allowance Explanation: Ration synonyms are allowance, consignment, quota,...

Palm tree.

Answer: A) Relic Towers Explanation:

Answer: D) 36 yrs Explanation: Let present ages of Sumit=w, Krishna=x, Rishabh=y and Rohit=z , thenw+x+y = 43x3 = 129 ---(i) andw+y+z = 49x3 = 147 ---(ii)Subtracting (i) from (ii), (w+y+z) - (w+x+y)=147 -129 , z- x =18 ---(iii)Given Rohit's age => z = 54, so from (iii), x = 54-18 = 36

Answer: D) Opossum Explanation: The shortest gestation period known is 12 to 13 days, shared by three marsupials: the American or Virginian opossum (Didelphis marsupialis); the rare water opossum, or yapok (Chironectes minimus) of central and northern South America; and the eastern native cat (Dasyurus viverrinus) of Australia. Gestation is the period of time between fertilization and birth in oviparous animals. The elephant has the longest gestation period of about 23 months of any land animal.

Answer: A) Rs. 316 Explanation: S.I. for 2 years = (514 - 415) = Rs. 99S.I. for 1 year = 99/2 Principal = (415 - 99) = Rs. 316.