18
Anywhere from 10,000 to 90,000
There is no four digit number where the ones is twice the tens, the hundreds is five less than the ones, and the thousands is the sum of the tens and hundreds. int ones, tens, hundreds, thousands; for (thousands=1; thousands<10; thousands++) { /**/ for (hundreds=0; hundreds<10; hundreds++) { /**/ /**/ for (tens=0; tens<10; tens++) { /**/ /**/ /**/ for (ones=0; ones<10; ones++) { /**/ /**/ /**/ /**/ if (ones != 2 * tens) break; /**/ /**/ /**/ /**/ if (hundreds != ones - 5) break; /**/ /**/ /**/ /**/ if (thousands != tens + hundreds) break; /**/ /**/ /**/ /**/ printf ("dd\n", thousands, hundreds, tens, ones); /**/ /**/ /**/ } /**/ /**/ } /**/ } }
Tens of thousands means multiples of 'ten thousand' (10,000) 4 tens of thousands means there are 4 times 10,000 which is 40,000
3000 has 3 thousands, 30 hundreds and 300 tens. 40000 has 40 thousands, 400 hundreds and 4000 tens. 500000 has 500 thousands, 5000 hundreds and 50000 tens. 6000000 has 6000 thousands, 60000 hundreds and 600000 tens.
18
There are 180 tens in 1800. To get this answer, you must do 1800 divided by 10.
Anywhere from 10,000 to 90,000
Tens of thousands
65
There is no four digit number where the ones is twice the tens, the hundreds is five less than the ones, and the thousands is the sum of the tens and hundreds. int ones, tens, hundreds, thousands; for (thousands=1; thousands<10; thousands++) { /**/ for (hundreds=0; hundreds<10; hundreds++) { /**/ /**/ for (tens=0; tens<10; tens++) { /**/ /**/ /**/ for (ones=0; ones<10; ones++) { /**/ /**/ /**/ /**/ if (ones != 2 * tens) break; /**/ /**/ /**/ /**/ if (hundreds != ones - 5) break; /**/ /**/ /**/ /**/ if (thousands != tens + hundreds) break; /**/ /**/ /**/ /**/ printf ("dd\n", thousands, hundreds, tens, ones); /**/ /**/ /**/ } /**/ /**/ } /**/ } }
Tens of thousands means multiples of 'ten thousand' (10,000) 4 tens of thousands means there are 4 times 10,000 which is 40,000
3000 has 3 thousands, 30 hundreds and 300 tens. 40000 has 40 thousands, 400 hundreds and 4000 tens. 500000 has 500 thousands, 5000 hundreds and 50000 tens. 6000000 has 6000 thousands, 60000 hundreds and 600000 tens.
Tens.
60 tens
1800
Tens and millions and thousands and what comes next pounds