U.S. hiring likely increased at its quickest pace in five months in April, which would bolster hopes of a strong rebound in economic activity in the second quarter. Employers probably added 210,000 jobs last month after increasing headcount by 192,000 in March, according to a Reuters poll. That would also top the pace of payrolls gains in the first quarter of 177,667 jobs per month. The unemployment rate is forecast falling one-tenth of a percentage point to 6.6 percent in April, matching a five-year low previously touched in January.