Question
If from a pack of 52 playing cards, 1 card is drawn at
random. What is the probability that it is either a King, Queen or a Jack?Solution
P(E) = (⁴C₁ + ⁴C₁ + ⁴C₁)/(⁵²C₁) = (4+4+4)/52 = 12/52 = 3/13 Simplified Solution: Total Cards = 52 Number of kings in a deck = 4; P(getting a King) = 4/52 = 1/13 Similarly, P(getting a Queen) = 1/13 P (getting a Jack) =1/13 P (King or Queen or Jack) = 1/13 + 1/13 + 1/13 = 3/13
24.035 × √? = 4607.89 ÷ 11.8259
What approximate value will replace the question mark (?) in the following?
18.99...
‘A’ and ‘B’ can build a wall in 8 days and 12 days, respectively. If ‘A’ started building the wall alone but after 4 days he was replaced by...
14.99% of 7820 + 5535.25 ÷ 123.001 - ? = 84
[(2/3 of 899.79) + 25% of 500.21] × (√195.77 + 30.03% of 399.79) = ?
`root(3)(725.87)` `-:` `sqrt(81.033)` + 49.88% of 809.77 = ? - (14.78 `xx` 52.2)
(?)2 + 3.113 = 22.92 – 61.03
(48.89 ÷ 7.08) × (35.96 ÷ 4.11) + (9.02 × 1.99) = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
30.02% of 420.11 + 44.96% of 499.96 - 203.12 = ?
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