Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are queens?
N(S) = 52C2 = 1326 Let A be the event of getting two Black cards And B be the event of getting two queens And (A∩B) be the event of getting two black queens ∴ n(A) = 26C2 , n(B) =4C2 , n(A∩B) = 2C2 ∴ P(A) = 26C2/52C2 , P(B)= 4C2/52C2 , P(A∩B) = ( 2C2)/52C2 Required Probability = P(A) + P(B) - P(A∩B) = 26C2/52C2 + 4C2/52C2 - ( 2C2)/52C2 = 325/1326+ 1/221+ 1/1326 = 55/221
When the leaflets are joined together at a common point at the petiole, the type of leaf is
The gynoecium occupies the highest position while the other parts are situated below it. Which type of flower is that?
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as
Pea, gulmohur, bean, Cassia have ___ type of symmetry and hance they are ____ flowers.
Photosynthesis occurs in which cell organelle of the plant?
Manures are categorised into bulky and concentrated organic manure. An example of Concentrated organic manure is
More incidence of fruit cracking in pomegranate takes place in which season?
The monocotyledonous plants can be distinguished from dicotyledonous plants by:
The organelle responsible for protein synthesis in plant cells is the:
Pungency in radish is due to the presence of
