# Difficult Maths Equations and Trivia

How much do you REALLY know about maths?
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Don't cheat by searching on the net, and find out just how much you know about mathematics! Don't go thinking its too easy...
1
What is the value of Pi to 8 decimal places ?
• 4.15378921
• 3.14159265
• 3.14159239
• 3.22157896
• 2
What is the value of ln9?
• ln7 + ln2
• 9.3
• 81 + ln1
• 2ln3
• 3
What is the general Equation of a line?
• y = x
• ay = bx
• y = mx + c
• y = mx
• 4
The gradient of a line can be found by which of these formulae?
• dy / dx
• dy * d
• d * dx
• None of the above
• 5
Which of these is impossible?
• log 0
• ln 1
• sin 80 (degrees)
• 6
Is the standard deviation of a sample the same as the varience?
• Yes
• No
• 7
Is the cosine rule; aÂ² = bÂ² + cÂ² - 2bc cosA
• Yes
• No
• 8
Which of these is the correct trigonometric identity for sin(a + b)
• sin a cos b - cos a sin b
• cos a cos b - sin a sin b
• sin a cos b + cos a sin b
• cos a cos b + sin a sin b
• 9
What is the volume of a sphere?
10
What is 2.45 * 10 ^ (-19)
• 0.0000000000000000000245
• 0.000000000000000000245
• 0.00000000000000000245
• 0.0000000000000000245
• 11
When did Pythagoras live (according to the most recent historical evidence)?
• 1500 BC - 1433 BC
• 472 BC - 400 BC
• 502 BC - 438 BC
• 580 BC - 500 BC
• 12
How many vertices does a cuboid have?
• 4
• 6
• 8
• 12
• 13
What is 493% of Â£52.87? (rounded to the nearest pence)
14
The graph of tan has 4 assymptotes
• True
• False
• 15
What is the square root of ( -1)
• i
• b
• z
• 1
• Unanswered questions will be marked as wrong