গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৭৪০১–১৭৪২০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- If the mean of a, b, c is 4 and ab + bc + ca = 0, then the mean of a2, b2 and c2 is- MCQ
- The average of ten number is 7. If each number is multiplied by 10, then the average of the new set of number is- MCQ
- The average price of three items of furniture is Tk. 30000. If their prices are in the ratio 3 : 5 : 7, what is the price of the cheapest item? MCQ
- The average of 7 consecutive numbers is a. If the next two numbers are included, the average will be- MCQ
- A student was asked to find the arithmetic mean of the numbers 3, 12, 7, 9, 15, 13, 8, 18, 17, 21, 14 and x. He found the mean to be 12. What should be the number in place of x? MCQ
- The average of first five multiples of 5 is- MCQ
- The average of 4 terms is 20 and the last term is 1/3 of the remaining terms. What will be the last number? MCQ
- The average monthly income of P and Q is Tk. 6,000; that of Q and R is 5,250; and, that P and R are Tk. 5,500. What is P’s monthly income? MCQ
- The average age of 8 members of a group is 36 years. The age of the eldest member is 43 years. If we exclude that eldest member from the group, then what will be the average age (in years) of the remaining members? MCQ
- The average ages of the players on team A and team B are 20 and 30 years, respectively. The average age of the players on the teams together is 26. If the total number of players on the two teams is 100, then how many players does team A have? MCQ
- Father is aged three times more than his son Rony. After 8 years, he would be two and a half times of Rony's age. After further 8 years, how many times would he be of Rony's age? MCQ
- Which of the following is a rational number? MCQ
- The smallest value of natural number n, for which 2n + 1 is not a prime number is - MCQ
- Which number is to be added to the numerator and denominator of 7/17 to form 3/5? MCQ
- If the average of P numbers is Q2 and that of Q numbers is P2, then the average of (P + Q) numbers - MCQ
- If the square of an odd natural number is divided by 8, then the remainder will be - MCQ
- In a certain assembly constituency election, 80% of voters exercised their voting right and the winning candidate got elected with 65% of votes polled. What percent of total votes did he poll? MCQ
- If a man rows at the rate of 7 kmph in still water and his rate against the current is 4 kmph, then the man's rate along the current is- MCQ
- A company blends two varieties of tea from two different tea gardens, one variety costing Tk. 30 per kg and the other Tk. 20 per kg in the ratio 4 : 3. He sells the blended tea at Tk. 27 per kg. Find the profit or loss percent. MCQ
- The compound interest on Tk. 3000 for 2 years at 10% is- MCQ