গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৮৭৪১–১৮৭৬০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- A person was asked to state his age in years. His reply was, “Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am.” What was the age of the person? MCQ
- Three years ago the average age of A and B was 18 years with C joining them, then the average becomes 22 years. How old is C now? MCQ
- A is two years older than B who is twice as old as C. If the total of the ages of A, B and C are 27, then how old is B? MCQ
- Tania's grandfather was 8 times older to her 16 years ago. He would be 3 times of her age 8 years from now. Eight years ago, what was the ratio of Tanya's age to that of her grandfather? MCQ
- If 6 years are subtracted from the present age of Akib and the remainder is divided by 18, then the present age of Razib is obtained. If Razib is 2 years younger to Tomal whose age is 5 years, then what is Akib's present age? MCQ
- The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is - MCQ
- A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family in years? MCQ
- There were 35 students in a hostel. If the number of students increases by 7, the expenses of the mess increase by Tk. 42 per day while the average expenditure per head diminishes by Tk. 1. Find the original expenditure of the mess? MCQ
- The average salary of 65 workers is Rs. 5680 out of which average salary of 31 workers is Rs. 2356 and that of 23 workers is Rs. 4589. What is the average salary of remaining workers? MCQ
- In a primary school the average weight of male students is 65.9 kg and the average weight of female students is 57 kg. If the average weight of all the students (both male and female) is 60.3 kg and the number of male students in the school is 66, what is the number of female students in the school? MCQ
- A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 9 are wrong, but the other digits are correct, then what will be the correct? MCQ
- P and Q are two positive integers such that PQ = 64. Which of the following cannot be the value of P + Q? MCQ
- If a and b are positive integers and (a - b)/3.5 = 4/7. Then - MCQ
- The sum of all prime numbers from 1 to 20 is - MCQ
- If a + b + c = 6 and ab + bc + ca = 10 then the value of a3 + b3 + c3 - 3abc is? MCQ
- What should be added to 2x2 + 3x - 5 to make x2 - x + 1? MCQ
- The numbers of terms between 11 and 200 which are divisible by 7 but not by 3 are - MCQ
- A certain number when divided by 899 gives a remainder 63. What is the remainder when the same number is divided by 29? MCQ
- The difference between two numbers is 1365. When the larger number is divided by the smaller one, the quotient is 6 and the remainder is 15. What is the smaller number? MCQ
- When a number is divided by 13, the remainder is 11. When the same number is divided by 17, the remainder is 9. What is the number? MCQ