71 divides the sum of the primes less than it.
72 is the maximum number of spheres that can touch another sphere in a lattice packing in 6 dimensions.
73 is the smallest number (besides 1) which is one less than twice its reverse.
74 is the number of different non-Hamiltonian polyhedra with minimum number of vertices.
75 is the number of orderings of 4 objects with ties allowed.
76 is an automorphic number.
77 is the largest number that cannot be written as a sum of distinct numbers whose reciprocals sum to 1.
78 is the smallest number that can be written as the sum of of 4 distinct squares in 3 ways.
79 is a permutable prime.
80 is the smallest number n where n and n+1 are both products of 4 or more primes.
Whim:
71 = centimetres in a Russian archine
72 = pins on a 72 Pins memory module
73 = poems by E. E. Cummings
74 = facets on the cullinan (largest diamond of the world)
75 = years of marriage for the diamond anniversary
76 = height of tennis table in cm.
77 = Favorite Drink of Tony Manero (in Saterday Night Fever)
78 = Number of cards in a Tarot pack
79 = ?
80 = Maximum number of pieces on a stratego board
You just keep getting better.
Mark:
76) The number of trombones that led the big parade.
79) The smallest prime with digits that sum to 16.
Classic.
Li'l Turtle:
"I wish I had one of those for every difficult question you've asked."
If I had one for every question I answered, I would have less than a nickel"
"I think I'm being good"
Good is ok! But, bad is wicked. May I also say, you add a touch of much needed glamour and intrigue to the proceedings.
Getting down to the near impossible.
81
82
83
84
85
An alternative to easy.
A square has a side length of x units.
The square's length is then increased by 2 units and its width is increased by 9 units.
By how many square units does the area of the new rectangle exceed the area of the square, in terms of x
On a recent math test, the mean score for Turtlettes first and second
period classes combined was 74%. The mean score in the first period class was 70%, and the mean score in the second period was 80%. There was a total of 50 students in the two classes.
How many students were in first period
Two sides of an isosceles triangle have measures of x + 10 and x + 40 and the perimeter of the triangle is 420 units. Is it possible to find the sum of the two possible values of x
Oh, jeepers, look at the hour, time to bunk down.