Answer: B) 50 km Explanation: We know 60 min = 1 hrTotal northward Laxmi's distance = 20kmph x 1hr = 20 kmTotal southward Prasanna's distance = 30kmph x 1hr = 30 kmTotal distance between Prasanna and Laxmi is = 20 + 30 = 50 km.

The Tripitaka was Written in Third Century bce(beginning of the common era). The Tripitaka (called Tipitaka in Pali) is the earliest collection of buddhist writings. Initially, they were composed orally.

Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P(A) + P(B) - P(AꓵB). An event is disjoint if P(A ꓵ B) = 0. If K and L are disjoint P(K ꓴ L) = 0.8 + 0.6 = 1.4 And Since probability cannot be greater than 1, these two mentioned events cannot be disjoint.

Answer: A) Nucleus Explanation: Nucleus serves as the control center for cell metabolism and reproduction.

Answer: D) Footsteps Explanation: Yes, footsteps are what we take more, the more we leave behind.

Answer: A) Element Explanation: The simplest form of matter that has a unique set of properties and is cannot be broken down into simpler substances by chemical means is called an Element.   An Atom is the simplest form of an element. The simplest form of some elements is a Molecule. When an element consists of two identical atoms it is called a diatomic molecule. A substance that contains two or more elements chemically combined in a fixed proportion is called a Compound.

Answer: C) IISc-Bengaluru Explanation: The Indian Institute of Sciences (IISc)- Bengaluru has topped the list of best universities of country's official higher education rankings, recently announced by the HRD Ministry.

Answer: C) Mesosphere Explanation: The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.   Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.