Topper's Academia-Shaping The future

Q1. The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misread as 34. It was also found that the number of items was 90 and not 100. Then what is the correct mean? (a) 50 (b) 50.7 (c) 52 (d) 52.7 Q2. The average of seven numbers is 18. If one of the number is 17 and if it is replaced by 31, then the average becomes: (a) 21.5 (b) 19.5 (c) 20 (d) 21 Q3. In an exam, the average marks obtained by the students was found to be 60. After omission of computational errors, the average marks of 100 candidates had to be changed from 60 to 30 and the average with respect to all the examinees came down to 45 marks. The total number of candidates who took the exam, was (a) 200 (b) 210 (c) 240 (d) 180 Q4. The average to 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then the correct average would have been: (a) 69 (b) 79.25 (c) 79 (d) 79.5 Q5. The average of 9 inte

Q1. The average marks of 50 students in a class is 72. The average marks of boys and girls in that subject are 70 and 75 respectively. The number of boys in the class is: (a) 30 (b) 20 (c) 35 (d) 25 Q2. The average age of 14 girls and their teacher’s is 15. If teacher’s age is excluded the average reduces by 1. What is the teacher’s age? (a) 35 years (b) 32 years (c) 30 years (d) 29 years Q3. There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 20 students is 13.1 years. The average age (in years) of the students of the whole class is: (a) 12.5 years (b) 12.7 years (c) 12.8 years (d) 12.9 years Q4. The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1. If the average score of the boys is A + 1, the average score of the girls is: (a) A + 1 (b) A – 1  (c) A + 3  (d) A – 3  Q5. Five years ago, the average age of P and Q was 25. The averag

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Q1. The average age of A, B, C, D, and E is 40 years. The average age of A and B is 35 years and the average age of C and D is 42 years. The age of E is? ए, बी, सी, डी और ई की औसत आयु 40 साल है। ए और बी की औसत आयु 35 वर्ष है और सी और डी की औसत आयु 42 वर्ष है। ई की उम्र है: (a) 46 (b) 48 (c) 32 (d) None of these/ इनमे से कोई नही Q2. Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each of their meals and the ninth spent Rs. 8 more than the average expending of all the nine. Total money spent by them was? नौ लोग अपने भोजन लेने के लिए एक होटल गए। उनमें से आठ ने 12 रुपये रुपये खर्च किये और नवेँ ने आठों के खर्च से औसत 8 रुपये अधिक खर्च किये. उनके द्वारा खर्च किया गया कुल पैसा था: (a) 104 (b) 105 (c) 116 (d) 117 Q3. The average age of eleven cricket players is 20 years. If the age of the coach is also included, the average age increases by 10%. The age of the coach is? ग्यारह क्रिकेट खिलाड़ियों की औसत आयु 20 साल है। यदि कोच की उम्र भी शामिल है, तो

Average Sheet 1 Q1. The mean of 11 numbers is 35. If the mean of first 6 numbers is 32 and that of the last six numbers is 37, find the sixth number. (a) 28 (b) 29 (c) 30 (d) 27 Q2. The average of 5 consecutive integers starting with ‘m’ is n. What is the average of 6 consecutive integers starting with (m + 2)? (a) (2n+5)/2 (b) (n + 2) (c) (n + 3) (d) (2n+9)/2 Q3. Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight given numbers is: (a) 54 (b) 64 (c) 36 (d) 48 Q4. The average of four consecutive even numbers is 15. The 2nd highest number is: (a) 12 (b) 14 (c) 18 (d) 16 Q5. Average of first five odd multiples of 3 is (a) 12 (b) 16 (c) 15 (d) 21 Q6. In a 20 over the match, the required run rate to win is 7.2. If the run rate is 6 at the end of the 15th over, the required run rate to win the match is: (a) 1.2 (b) 13.2 (c) 10.8 (d) 12 Q7. If the mean of 4 observations is 20, when a c

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