A letter is taken out at random from ‘ROORKEE’ and another is taken out from ‘BOOKKEEPER’. The probability that they are the same letter is
Hence, B and P are not common and same letters can be R, O, K, E Probability of choosing R = (²C₁)/(⁷C₁) × (¹C₁)/(¹⁰C₁) = 1/35 Probability of choosing O = (²C₁)/(⁷C₁) × (²C₁)/(¹⁰C₁) = 2/35 Probability of choosing K = 1/(⁷C₁) × (²C₁)/(¹⁰C₁) = 1/35 Probability of choosing E = (²C₁)/(⁷C₁) × (³C₁)/(¹⁰C₁) = 3/35 Hence, Required Probability = 1/35+ 2/35+ 1/35+ 3/35 = 7/35 = 1/5
How many plants per acre are recommended with a spacing of 2 x 2 meters for Eucalyptus cultivation?
Legume crops includes
(A) Pigeon pea
(B) Greengram
(C) Lentil
(D) Horsegram
(E) Rapeseed
Choose the correct answer from the options given below:
World Forestry Day is celebrated on
Diversification is best described as _____.
Water enters through minute pores……………..in the body wall into a central cavity, spongocoel.
Which of the following occurs during meiosis but not during mitosis?
A cross between a single cross hybrid and an inbreed {(A × B) × C} is
The term leptome is used for
Which layer of the atmosphere has lowest average temperature?
Which of the following is not a variety of bajra: