A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black pair is double that of a brown pair. While preparing the bill, the clerk interchanged the number of black and brown pairs by mistake which increased the bill by 50%. The ratio of the number of black and brown pairs of socks in the original order was `1:2` b. `2:1` c. `1:4` d. `4:1`

A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black pair is double that of a brown pair. While preparing the bill, the clerk did a mistake and interchanged the number of black and brown pairs. This increased the bill by 50%. The ratio of the number of black and brown pairs of socks in the original order was

Ajay ordered 4 pairs of black socks and some additional pairs of blue socks. The price of the black socks per pair was twice that of the blue ones. When the order was filled, it was found that the number of pairs of the two colours had been interchanged. This increased the bill by 50%. Find the ratio of the number of pairs of black socks to the number of pairs of blue socks in the original order.

Total number of lone pairs and bond pairs of electrons present in XeF_4 is

The numbers of lone pair and bond pairs in hydrazine are, respectively :

What is ordered pairs and Equality of ordered pairs

A man has 3 pairs of black socks and 2 pair of brown socks kept together in a box.If he dressed hurriedly in the dark,the probability that after he has put on a black sock,he will then put on another black sock is 1/3 b.2/3 c.3/5 d.2/15

A bag contains twelve pairs of socks and four socks are picked up at random.The probability that there is at least one pair is equal to -