Subject
Bank Exam
Topic
Probashi Kallyan Bank Ltd (Senior Officer) - 09.10.2021
Given that 1²+2²+3²+..................+10² =385 ,what is the value of 3²+6² +9² .........30²?
Given that 1²+2²+3²+..................+10² =385 ,what is the value of 3²+6² +9² .........30²?
ক)
1,155খ)
1,540গ)
1,925ঘ)
3,465Explanation
দেওয়া আছে , 3²+6²+9²+........30² =3²× 1²+(2× 3)² +(3× 3)² +.........+(3×10)² =3²(1²+2²+3²..............+10²) =3²×385 =9×385 =3,465Related questions
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