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October 21, 2025, 08:18:41 pm
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Author Topic: My GMA Question Thread  (Read 22919 times)  Share 

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alchemy

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Re: Cooper's GMA Question Thread
« Reply #75 on: January 04, 2014, 10:18:49 am »
+1
Question: What is the sum of all even numbers between 1 and 99?

My answer: = =

Why is it giving that decimal?? >_<
The given answer is 2450, so I must be doing something 'silly'.
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brightsky

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Re: Cooper's GMA Question Thread
« Reply #76 on: January 04, 2014, 10:34:46 am »
+1
2+4+6+...+98 = 49/2*(2+98) = 49*50 = 2450
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alchemy

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Re: My GMA Question Thread
« Reply #77 on: January 26, 2014, 10:40:01 am »
0
To reach a lookout from a campsite, a bush walker walks 2km due south up a slope which is inclined at 30 degrees to the horizontal. Le i be a unit vector due east, j a unit vector due north, and k a unit vector vertically up. The position vector of the lookout relative to the campsite is?
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