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1405Block Trade Gross 5A desk proxy for gross block-trade dollars is block count * average block size in dollars. If those inputs are 1250 and 14 million, what estimate results?脑筋急转弯困难数值题未尝试面试订阅1408Prime-Broker Margin 8A desk proxy for aggregate posted margin is clients * average posted margin. If the total is 3.128 billion and clients is 920, what average posted margin is implied?脑筋急转弯中等数值题未尝试免费1410ATM Call Proxy 2Use the desk proxy premium ~= 0.4 * S * sigma * sqrt(T). If S=120, sigma=30%, and T=0.25 years, what premium estimate results?脑筋急转弯困难数值题未尝试面试订阅1413Vega Proxy 5Use the proxy vega ~= 0.4 * S * sqrt(T). If S=95 and T=1 year, what vega estimate results?脑筋急转弯中等数值题未尝试免费1415Forward Points Carry 7If a currency pair trades at 1.2400 spot and 1.2462 three-month forward, what are the forward points?脑筋急转弯困难数值题未尝试面试订阅1425Basis-Point Revenue 17What is 7.5 bp of 640 million?脑筋急转弯困难数值题未尝试面试订阅1428Exponential Quadratic Remainder 3Compute lim (x->0) [exp(3x + -2x 2) - 1 - 3x] / x 2.数学中等数值题未尝试免费1435Logarithmic Mixed Expansion 5Compute lim (x->0) [ln(1 + 5x + 2x 2) - 5x] / x 2.数学困难数值题未尝试面试订阅1440Square-Root Remainder 5Compute lim (x->0) [sqrt(1 + 3x + -4x 2) - 1 - (3/2)x] / x 2.数学困难数值题未尝试面试订阅1441Trigonometric Asymptotic 1Compute lim (x->0) [sin(2x + 7x 2) - 2x] / x 2.数学简单数值题未尝试免费1444Trigonometric Asymptotic 4Compute lim (x->0) [arctan(5x) - 5x] / x 3.数学困难数值题未尝试面试订阅1446Mixed-Expansion Limit 1Compute lim (x->0) [((e x - 1) - ln(1+x)) / x 2].数学简单数值题未尝试免费1447Mixed-Expansion Limit 2Compute lim (x->0) [((sqrt(1+x) - sqrt(1-x)) - x) / x 3].数学简单数值题未尝试免费1448Mixed-Expansion Limit 3Compute lim (x->0) [ln(1+2x) - 2 arctan(x)] / x 2.数学中等数值题未尝试免费1449Mixed-Expansion Limit 4Compute lim (x->0) [e x cos(x) - 1 - x] / x 2.数学中等数值题未尝试免费1450Mixed-Expansion Limit 5Compute lim (x->0) [ln(cosh(2x))] / x 2.数学困难数值题未尝试面试订阅1451Alternating-Input Recurrence 1A sequence satisfies x (n+1) = 1/2 x n + c n, where c n = 1 on odd n and c n = 3 on even n. Assuming any starting value x 1, what are the limits of the even and odd subsequences?数学简单数值题未尝试免费1467Repeating-Block Power Series 2Let a n repeat the block [2, -1] forever. Evaluate sum (n=1) inf a n * (1/4) n.数学中等derivation未尝试免费1469Repeating-Block Power Series 4Let a n repeat the block [1, 2, 0, 1] forever. Evaluate sum (n=1) inf a n * (1/2) n.数学困难derivation未尝试免费1470Repeating-Block Power Series 5Let a n repeat the block [4, -2, 1] forever. Evaluate sum (n=1) inf a n * (1/6) n.数学困难derivation未尝试面试订阅