Related Questions

পানি ও চিনির একটি মিশ্রণে পানি ও চিনির অনুপাত ৮ঃ৩। যদি এটাতে ২ কেজি চিনি যোগ করা হয় তাহলে তাদের অনুপাত হয় ২ঃ১। মূল দ্রবণে চিনির পরিমাণ কত কেজি ছিল ?
A ৪
B ৪.৫
C ৬
D ৫
জুয়েলের বয়স তার পুত্র সুমন এর বয়সের দ্বিগুণ ।১০বছর পূরবে তাদের বয়সের অনুপাত ছিল ৮ঃ৩ । জুয়েল এর বর্তমান বয়স কত ?
A ৪৯
B ৫০
C ৫১
D ৫২
In a class , three-fourth of the boys play football, one-half play cricket, one fourth of those who play cricket do not play football. Which of the following statements is definitely true?
A One-third of the boys play neither cricket nor football
B Two-third of the boys play only football
C One -Fourth of the boys play neither cricket nor football
D Two-fifth of the boys play only football
In a class, three-fourth of the boys play football, one-half play cricket, one-fourth of those who play cricket do not play football.
A Two-third of the boys play only football.
B One-fourth of the boys play neither cricket nor football.
C One-third of the boys play neither cricket nor football.
D One-eighth of the boys play neither cricket nor football.
E Two-fifth of the boys play only football.
What is the fourth proportional of 3,9 and 4?
A 12
B 16
C 8
D 6
One -fourth of the boys and three -eight of the girls in a school participated in the annual sports. What proportional part of the total student population of the school participated in the annul sports?
A 4/12
B 5/8
C 8/12
D None of these
What is the fourth proportional to 72, 168 and 150?
A 450
B 300
C 350
D 400
What is the fourth proportional to 24, 120 and 22?
A 110
B 120
C 100
D 90
What is the fourth proportional to 189, 273 and 153?
A 117
B 299
C 221
D 187
The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances. This is the
A Lewis-Randall rule
B Statement of Vant-Hoff equation
C Le-Chatelier's principle
D None of these

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