The city of beijing has a population of more than 10 to the 7th power people. write 10 to the 7th power without using an exponent

10^7 = 10 * 10 * 10 * 10 * 10 * 10 * 10 = 10 000 000

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)