5 results found for "382" in Class 10.
C. (85)
\(x^2-40x=3825\) से \(x^2-40x-3825=0\) बनता है। धनात्मक हल (x=85) है। / \(x^2-40x=3825\) gives \(x^2-40x-3825=0\). The positive solution is (x=85).
Login to save your score, XP, coins and progress.
If \(S_n=7n^2-2n\), find the sum from the (41)st term to the (60)th term.
A. (13960)
आवश्यक योग \(S_{60}-S_{40}=13960\) है। दिए गए \(S_n\) में सीमाओं के अनुसार सीधे घटाव करें। / The required sum is \(S_{60}-S_{40}=13960\). With given \(S_n\), subtract directly according to the limits.
Login to save your score, XP, coins and progress.
What is the sum of the numbers divisible by (14) between (100) and (350)?
A. (3808)
संख्याएँ \(112,126,\ldots,336\) हैं और (17) पद हैं, इसलिए योग (3808) है। पहले और अंतिम उपयुक्त गुणज ढूँढ़ें। / The numbers are \(112,126,\ldots,336\), and there are (17) terms, so the sum is (3808). Find the first and last suitable multiples.
Login to save your score, XP, coins and progress.
In an AP \(a_{20}=178\) and \(a_{52}=626\). What is \(a_{36}\)?
C. (402)
\(a_{36}\), \(a_{20}\) और \(a_{52}\) के बीच समान दूरी पर है। इसलिए \(a_{36}=\frac{178+626}{2}=402\)। / \(a_{36}\) is equally spaced between \(a_{20}\) and \(a_{52}\). Therefore \(a_{36}=\frac{178+626}{2}=402\).
Login to save your score, XP, coins and progress.
What is the correct prime factorisation of 582120?
A. \(2^4\times3^3\times5^2\times7^2\times11\)
\(582120=52920\times11\) लिखें। / Write the number using prime-base groups.
\(52920=2^3\times3^3\times5\times7^2\) नहीं बल्कि यहां \(16\times27\times25\times49\times11\) से \(2^4\times3^3\times5^2\times7^2\times11\) मिलता है। / \(16\times27\times25\times49\times11=2^4\times3^3\times5^2\times7^2\times11\).
दशमलव वाले विकल्प से बचें और अभाज्य आधार लिखें। / Avoid decimal-based options and write prime bases.
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.