661 The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 3/5. Find the fraction? Mathematics Medium Full question → A 2/3 B 3/5 C 4/7 D 5/9
662 The cost of 10 kg of apples is equal to the cost of 24 kg of rice. The cost of 6 kg of flour equals the cost of 2 kg of rice. The cost of each kg of flour is Rs.20.50. Find the total cost of 4 kg of apples, 3 kg of rice and 5 kg of flour? Mathematics Medium Full question → A Rs.849.40 B Rs.877.40 C Rs.901.60 D Rs.815.20
663 A question paper consists of five problems, each problem having three internal choices. In how many ways can a candidate attempt one or more problems? Mathematics Medium Full question → A 63 B 511 C 1023 D 15
664 In a class there are 20 boys and 25 girls. In how many ways can a boy and a girl be selected? Mathematics Medium Full question → A 400 B 500 C 600 D 20
665 In how many ways can three consonants and two vowels be selected from the letters of the word “TRIANGLE”? Mathematics Medium Full question → A 25 B 13 C 40 D 30
666 A bag contains nine yellow balls, three white balls and four red balls. In how many ways can two balls be drawn from the bag? Mathematics Medium Full question → A ⁹C₂ B ³C₂ C ¹⁶C₂ D ¹²C₂
667 How many four digit even numbers can be formed using the digits {2, 3, 5, 1, 7, 9} Mathematics Medium Full question → A 60 B 360 C 120 D 240
668 How many four digit numbers can be formed using the digits {1, 3, 4, 5, 7,9}(repetition of digits is not allowed)? Mathematics Medium Full question → A 360 B 60 C 300 D 180
669 A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most__________? Mathematics Medium Full question → A 216 B 243 C 215 D 729
670 A committee has 5 men and 6 women. What are the number of ways of selecting a group of eight persons? Mathematics Medium Full question → A 165 B 185 C 205 D 225
671 What are the number of ways to select 3 men and 2 women such that one man and one woman are always selected? Mathematics Medium Full question → A 100 B 60 C 30 D 20
672 A committee has 5 men and 6 women. What are the number of ways of selecting 2 men and 3 women from the given committee? Mathematics Medium Full question → A 150 B 200 C 250 D 300
673 The number of permutations of the letters of the word ‘MESMERISE’ is___________? Mathematics Medium Full question → A 9!/(2!)2 3! B 9!/(2!) 3 3! C 9!/(2!) 2 (3!) 2 D 5!/(2!) 2 3!
674 The number of arrangements that can be made with the letters of the word MEADOWS so that the vowels occupy the even places? Mathematics Medium Full question → A 720 B 144 C 120 D 36
675 Using all the letters of the word “NOKIA”, how many words can be formed, which begin with N and end with A? Mathematics Medium Full question → A 3 B 6 C 24 D 120
676 Using all the letters of the word “THURSDAY”, how many different words can be formed? Mathematics Medium Full question → A 8 B 8! C 7! D 7
677 How many three letter words are formed using the letters of the word TIME? Mathematics Medium Full question → A 12 B 20 C 16 D 24
678 A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt? Mathematics Medium Full question → A 21 B 12 C 9 D 108
679 There are 30 people in a group. If all shake hands with one another , how many handshakes are possible? Mathematics Medium Full question → A 870 B 435 C 30! D 29! + 1
680 In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together? Mathematics Medium Full question → A 120 B 720 C 4320 D 2160