গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৫৫৬১–১৫৫৮০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- If mean of 14, 13, 18, 16, k, (k + 3) is 13, then what will be the mean of k, 8, 9, 11, 5, 10, 6? MCQ
- The present age of a father is 3 years more than three times the age of his son. Three years hence, father's age will be 10 years more than twice the age of the son. Find the present age of the father. MCQ
- The weighted mean of marks in Mathematics, Science, and English is 82. The marks in Mathematics and Science are 76 and 88, with weights 3 and 4, respectively. If the weight of English is 3, find the marks in English. MCQ
- One year ago, the ratio of Rahul's and Amir's age was 6 : 7 respectively. Four years hence, this ratio would become 7 : 8. How old is Amir? MCQ
- The average weight of P and his three friends is 55 kg. If P is 4 kg more than the average weight of his three friends, what is P's weight (in kg)? MCQ
- What is the mean of the first 99 natural numbers? MCQ
- Father’s present age is four times his son’s age. After 8 years, he will be two and a half times his son’s age. After another 8 years, what will be the ratio of the father’s age to the son’s age? MCQ
- 20 students of a college went to a hotel. 19 of them spent Tk. 175 each on their meal and the 20th student spent Tk. 19 more than the average of all the 20. Find the total money spent by them. MCQ
- The average age of A, B, C, D is 24 years. Average of A, B, C is 22 years and average of B, C, D is 26 years. Find average of B and C MCQ
- The average of 10 numbers is 60. The average of the first 5 numbers is 55 and the average of the next 3 numbers is 65. The 9th number is 10 less than the 10th number. Find the 10th number. MCQ
- The ages of 5 people are in the ratio 2 : 3 : 4 : 10 : 11. If their average age is 18 years, find the age of the eldest person. MCQ
- A man is 24 years older than his son. In two years, his age will be twice the age of his son. The present age of his son is: MCQ
- The average of x and y is 45, and the average of y and z is 50. If y = 42, then find the value of (x + z). MCQ
- The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be- MCQ
- The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then which one is correct? MCQ
- The present ages of three persons are in the ratio 4 : 7 : 9. Eight years ago, the sum of their ages was 56. Find their present ages (in years). MCQ
- If the mean exceeds the mode by 48 and the median is 12, find the mean. MCQ
- How many prime numbers are less than 70? MCQ
- Find the value of (125 + 216) - (1750/53) + 15 = ? MCQ
- The LCM and HCF of two numbers are 168 and 6 respectively. If one of the numbers is 24, find the other. MCQ