Subject
Bank Exam
Topic
সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান (সিনিয়র অফিসার) - ১০.১১.২০২৩
If a + b + c = 0, the value of (a2/bc) + (b2/ca) + (c2/ab) is -
If a + b + c = 0, the value of (a2/bc) + (b2/ca) + (c2/ab) is -
ক)
3abcখ)
(1/3)গ)
1ঘ)
3Explanation
a 3 + b 3 + c 3 - 3abc = (a + b + c) (a 2 + b 2 + c 2 - ab - bc - ca) a + b + c = 0, then a 3 + b 3 + c 3 - 3abc = 0 ∴ a 3 + b 3 + c 3 = 3abc (a 2 /bc) + (b 2 /ca) + (c 2 /ab) = (a 3 + b 3 + c 3 )/abc = 3abc/abc = 3Related questions
ব্যাকরণের আলোচ্য বিষয় -A, B, C, D and E are five consecutive numbers in increasing order of size. Deleting one of the five numbers from the set decreased the sum of the remaining numbers in the set by 20%. Which one of the following numbers was deleted?'চির' ও 'চীর' শব্দজোড়ের অর্থ যথাক্রমে -Bowl S contains only marbles. If (1/4) of the marbles were removed, the bowl would be filled to (1/2) of its capacity. If 100 marbles were added, the bowl would be full. How many marbles are in bowl S?কোন দুটি শব্দ কেবল জন্তুর বহুবচনে ব্যবহৃত হয়?Square ABCD is inscribed in a circle whose radius is 4cm. Calculate the area of the square.নিচের কোনটি দেশী শব্দ?What is the difference between the amount of interest earned on a principal of Tk. 100 for 2 years at 10% simple interest rate and 10% compounding interest rate?