How many times will the digit '3' appear if we write b all whole numbers from 1 to 999?

280

Step-by-step explanation:

100 times in the hundreds place: {300,301,3021,303,304, …,399}

90 times in the tens place: {130–139, 230–239, 330–339, …, 930–939}

90 times in the ones place: {103,113,123,…,193, 203,213,…293, 303,…393, . . . , 903,…,993}

its 300, because if you count yull get that and its right

Step-by-step explanation:

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

2

step-by-step explanation: