Start learning 50% faster. Sign in now
Let S be the sample space. Then, N(S) = number of ways of drawing 3 pens out of 11 = ¹¹C₃ = (11 ×10 ×9)/(3 ×2 ×1) = 165 Let E = event of getting 3 from 5 black pens. n(E) = ⁵C₃ = (5 × 4 )/(2 ×1) = 10 n(P) = (n(E))/(n(S)) = 10/165 = 2/33
Name the gas evolved when ethanoic acid is added to sodium carbonate?
Which acid is present in grapes?
When a body falls freely
Which of the following is the product when CH₃CHO is reduced?
Which is the correct IUPAC name for CH₃CH₂CH(CH₃)CH₂OH?
How can a mixture of sand and salt be separated?
_______ is a common name of ethanoic acid.
Which of the following elements is a member of the actinoid series?
Turquoise is an ore/mineral of:
When a metal reacts with dilute hydrochloric acid, it produces: