Question
A card is chosen at random from a standard deck of 52
playing cards, without replacing it, a second card is chosen. What is the probability that first card chosen is king and the second card chosen is a Queen?Solution
P (king on first pick) = 4/52 P (Queen on second pick given king on first pick) = 4/51 P (King and Queen) = 4/52 × 4/51 = 4/663
If β+β means βββ, βββ means βΓβ, βΓβ means βΓ·β, βΓ·β means β+β, then what will come in place of the question mark...
Which two numbers should be interchanged to make the given equation correct?
620 + 75 Γ· 8 Γ 35 β 44 Γ 5 + 15 = 583
If '+' means 'Γ', 'Γ' means '-', 'Γ·' means '+', and '-' means 'Γ·', select the number from the given options that can replace the question mark '?' i...
If '#' means ' - ', '@' means '+', '$' means 'Γ·' and '&' means ' X ', then what is the value of the following expression?
72 # 91 $ 7 & 4 @ 18
If 22 β 16 means 352, 450 + 50 means 9, 9 Γ· 3 means 12, 11 x 8 means 3, then ' 280 β 5 x 240 Γ· 450 + 9 x 26' = ?
If in a certain code language β+β represents βΓβ, βββ represents β+β, βΓβ represents βΓ·β and βΓ·β represents βββ....
Select the correct combination of mathematical signs that can sequentially replace the β*β signs and balance the given equation.
15 * 9 * 64 ...
If β+β means βminusβ, βΓβ means βdivided byβ, βΓ·β means βplusβ, and β-β means then βmultiplied byβ
250 Γ 10 οΏ½...
Which two signs should be interchanged to make the given equation correct?
15 Γ· 6 - 10 x 5 + 11 = 99
Which of the following βsignsβ are placed in place of βsymbolsβ given in the equation to make the equation true?
36 $ 12 % 6 + 8 β 9 @ ...
